Frictional reproducing attachment for phonographs.



A'JNJ'PIERMAN. v FRIGTIONAL REPRODUOING ATTACHMENT FOR PHONOGRAPHS.

' I APPLIOATIOR FILED APB. 28,1905.

PATENTED AUG. 21, 1906.

2 SHEETS-SHEET 1.

' In ventor A. .N. PIERMAN.

FRIGTIONAL REPRODUCING ATTACHMENT POR PHONOGRAPHS. APPLICATION FILED APR. 26. 1905.

PATENTED AUG. 21, 1906.

2 SHEETS-SHEET Z.

2 ZJIIIIM mmmnu VIII/[All m 7 IIIIIIII I TFHIIIMZ llllll gZImull IIHIZZ Inventor; .A W b 0 w/LM zmfi Atty stylus for varying the amount of UNITED srA r ns wn orsron ALEXANDER N. PIERMAN, NEWARK, N EW" JERSEY, ASSIGNOR TO NEW JERSEY PATENT COMPANY, OF WEST ORANGE, NEW JERSEY, A GOR- PORATlON or NEW JERSEY.

,FmcTioNAL- REPRODUCINGY ATTACHMENT For: PHoNoeRAPHs.

Specification of Letters Patent.

Patented Aug. 21, 1906.

Application filed April 26, 1905. I S rial No. 257,560.

and .useful Improvements in Frictional Re..; I

producing Attachments for .Phonographs, of whichthe following is a description.

My invention relates to reproducing attachi'nents forphono raphs of the type wherein a friction hee is'positively driven, and by a frictional connection between-said Wheel and the diaphragmthe latter is put. under stress, so that byproviding'suitable mechanism operated by the 're "reducing;

-frame 15. he upper end of the frame is 'ction the diaphragm will be thrown intovibration in accordance with the movements of the'stylus,

sion of apparatus of this character in which and thereby reproduce the sounds represented by the sound-waves of. the phonographic record on which the st lus travelaf Appa- 'ratus o crating upon t 's general. principle is well own in the. art, being disclosed in- British patents to Hope-Jones, N 0; 15,245 of 1890, and to St. George, No. 3,473 of 1880.

My invention has for its object the provithe diaphragm, friction-wheel, reproducerstylus, and connecting arts are carried b a frame or su port whic is capable of being inserted an held inthe sound-box-carrierarm of an ordinary phonograph.

Reference is hereby made to the accompa' 'nying drawings, in which- Figure 1- is a plan view of the improved attachment. Fig. 2 is a. side elevation showing. my improved attachment in operative position with respect to aphonograph-record and showing .also.in section the soundbox carrier-arm ofa phonograph and the support for the forward end of the same. v Fig. 3 is a section on line 3 3 of Fig. 2 viewedin the di'-- rection of the arrows. Fig. 4 is a section on line 3 3 of Fig. 2 viewed in the direction opposite to the arrows; Fig. 5 is a section on line 5 5 of Fig. 4.

Corresponding parts are indicated by the same reference characters in the several views. The improved attachment comprises a flanged ring 1 of a size suitable for fitting within the sound-box carrier-arm2 of an ordinary phonograph, in which it maybe se' c'urelyheld by a set-screw in the usual manner. Carried by the ringl is a supportingframe or body comprising a cylinder 3, disk 4, and an internally-threaded ririg 4*. Within the said ring the diaphragm 5 is clamped between rubber gaskets 6 6 in the usual manner by means of the flanged plate 7 and screwthreaded ring-8.1 A friction-wheel 9, of amber or other suitable materiaL'is mounted on.

a lpin or spindle 10, journaled in a-bracket 11, w ich is secured to the bottom of the disk 4.

The friction-Wheel [9 is circumferentiall derives'its power from a grooved friction- ,roller'13,]carriedon a spindle 14, which is supported b the free end of the floating looselytmounted on the 'pin 10, and the roller 13'normally rests against the surface of the soundrecord a, when the device .is 'in o erative position, being pressed against sai .sur-

face by the spring 29. The frame 15 isinclined-with respect to the surface of the record'a, so that the rotation. of the same in the direction indicated by the arrow, Figs. 2 and 5, tends to increase the pressure of the roller 14- on the surface of the record, whcreby a good driving contact is secured for the Triotion-roller. reproducer-stylus 16 is carried at one end of a lever 17, which is pivoted at 18 to a lug projecting downward from the weight 19. The latter is pivoted at 20 to a pin 21, carried by the ring 1', and is apertured at 28 for the passage of the driving-roller 13 and belt 12. The end of thelever 17 which is oppositethe stylus 16 is connected, by

means of a link 22, with an eye 23, secured to a lever24. The latter lever is pivoted at 25 to the bracket 11- and carries at its free end a roller 26'. Between the roller 26 and the friction-wheel 9 is a friction-plate 27, whose upagainst the lower face of the diaphragm and tongues which pass through the same and are bent over upon its u per face, (see Fig. 3,) whereby it is secure to'the' diaphragm 5.

- When the carrier-arm 2 is in its depressed position, as shown in Fig. 2, the stylus 16 will be in engagement with the record-groove of the phonogram a, and the roller 13 will rest upon the surface of the record. On operating the lift-lever b the M1112 will be elevated, and boththestylus 16 and roller 13 willbe clear of the surface of the phonograirj: In other l per end is formed with shoulders which abut Too words, my attachment will be thrown into and out ofoperation in exactly the same manner as an ordinary phonograph-reproducer.

The operation of the deviceis as follows;

"The lift-lever'b being "operatedto lower thestylus-l6 into engagement with the rotating ghonogram a, the roller 13 is simultaneously rought into driving engagement with the surfaceof the said phonogram and by'means of :the, belt 12 drives the friction-wheel 9.

The friction-wheel exerts a thrustupon the under elastic stress.

I through the lever 17 and ink 22, so that when the link 22 is drawn downward the roller 26 presses against the plate 27 and increases; the .amount .of friction between said plate and the wheel 9, thereby increasing the thrust upon the diaphragm. When the link 22 is moved upward, the roller 26 is carried 1 away from the plate 27, thereby decreasing I the friction between the wheel 9 and plate 27 and allowing the diaphragm to move toward Its normal position. The'dia'phragm is thus caused to respond accurately to the minute movements of the stylus 16 produced by the elevatlons and de' ressions of the recordphragm. and a'stylus engaging-the sound' -I claim'as new, and desire to secure by 'ters Patent, is as follows:

groove of the scan -record or phonogram 0.. -Having now described my invention, what 1.;In an apparatus of the character described, a rotating so nd-record, a sound. box carriage traveling transversely to the direction of rotation thereof, and a frictionwheel carried by the carriage and driven by the surface of the sound-record,substantially as set forth. 1

2. In an apparatus of the character described, a rotating sound-record, a dia-I phragm-support and diaphragm traveling transversely to the direction of rotation thereof, a rotating frictional element driven by the surface of the soundrecord and a co- 0 crating frictional element connected to the diaphragm, substantially as set forth.

8-. In an apparatus of thecharacter described, a. rotating sound-record, a dia 'phragm -support and diaphragm traveling transversely to the direction of rotation thereof, a rotating frictional'element driven by the surface ofthe sound-record, a cooperating frictional element connected to the diarecord and connected to' the last-mentioned frictional element, substantially as set forth.

4. In an apparatus of the character de: scribed, a sound-record, a diaphragm support and dia hragm, means for producing rotation of thesound-record' and relative movement of the sound-record and 1 'dia- 'phragm-support a direction transverse to the direction of rotation'o'f the sound-record, .6 5' a and a friction-wheel driven by the surface of the sound-record, substantially as set forth.

5. In an apparatus of the character described, 'a sound-record, a diaphragm-support and'diaphragm, means for' roducing7crotation of the sound-record an relativer movement of the sound-record and diaphragm-support 'in a direction transverse to the direction of rotation of the sound-record, I a friction-wheel driven by the surface of the sound-record and a frictional element con nected to the diaphragm and 006 crating .with said friction-wheel, substantial y as set forth. I 6. In an apparatus of the character described, a sound-record, a diaphragm-support and diaphragm, means forpioducing. rotation of the sound-record and relative movement of the soundrecord and dia phragm-support in a direction transverse to the direction'of rotation of the sound-record, a friction-wheel driven b thesurface of the sound-record, a fri'ctiona element connected to the'diaphragm and coo crating with the friction-wheel and a sty us engaging the sound-record and connected tov the said 00- operating frictional element, substantiallyas set forth. 7. .In an apparatus of the character describedpa frame or support carrying a diad5 .phragm, a friction wheel and an apertured floating Weight, said weight being provided with a reproducing-stylus, and driving means for said'friction-Wh'eel passing through the" v aperture of said floating weight; substanioo vtially as set forth. Y ,8. .In an apparatus of the character de:

scribed, a rotatin sound-record, a. sound box carriage trave in'g transversely to the direction of rotation thereof, a member pivotally supported'by said carriage and carrying at its'free end a friction-r01 or for engagementwith the record-surface, said roller beingin advanceof a line drawn from the said pivot perpendicular to the record-surface, ro whereby t e rotation of the record causes an increase of pressure of the roller upon the record, substantially as set forth. 9. The combination with the speaker for talking-machines, the. stylus, and the conr15 nection between said stylus and the diaphragm of said speaker, of a revolubledrum carried by said speaker in contact with saidconnection, and. driving means for said drumadapted to be actuated by the record-cyl- I2 inderlf p I This specification signed and witnessed this 25th day of April, 1905..

ALEXANDER.v N. PIERMAN. v

Witnesses 1 "Dnros HonnnN, I LpDYEBg. 

